Noted by @actuated, auxiliary/scanner/ipmi/ipmi_dumphashes was displaying an error when run against an IPMI endpoint that had a common hash. This was due to the services lookup in the database not extracting the first element of the results array.
```
[-] Auxiliary failed: NoMethodError undefined method `id' for #<Array:0x000055615614b970>
[-] Call stack:
[-] /home/bcook/projects/metasploit-framework/lib/metasploit/framework/data_service/proxy/credential_data_proxy.rb:27:in `block (2 levels) in create_cracked_credential'
[-] /home/bcook/.rvm/gems/ruby-2.6.1@metasploit-framework/gems/activerecord-4.2.11/lib/active_record/relation/delegation.rb:46:in `each'
[-] /home/bcook/.rvm/gems/ruby-2.6.1@metasploit-framework/gems/activerecord-4.2.11/lib/active_record/relation/delegation.rb:46:in `each'
[-] /home/bcook/projects/metasploit-framework/lib/metasploit/framework/data_service/proxy/credential_data_proxy.rb:25:in `block in create_cracked_credential'
[-] /home/bcook/projects/metasploit-framework/lib/metasploit/framework/data_service/proxy/core.rb:166:in `data_service_operation'
[-] /home/bcook/projects/metasploit-framework/lib/metasploit/framework/data_service/proxy/credential_data_proxy.rb:15:in `create_cracked_credential'
[-] /home/bcook/projects/metasploit-framework/lib/msf/core/auxiliary/report.rb:26:in `create_cracked_credential'
[-] /home/bcook/projects/metasploit-framework/modules/auxiliary/scanner/ipmi/ipmi_dumphashes.rb:317:in `report_cracked_cred'
[-] /home/bcook/projects/metasploit-framework/modules/auxiliary/scanner/ipmi/ipmi_dumphashes.rb:244:in `block (2 levels) in run_host'
[-] /home/bcook/projects/metasploit-framework/modules/auxiliary/scanner/ipmi/ipmi_dumphashes.rb:237:in `each'
[-] /home/bcook/projects/metasploit-framework/modules/auxiliary/scanner/ipmi/ipmi_dumphashes.rb:237:in `block in run_host'
[-] /home/bcook/projects/metasploit-framework/modules/auxiliary/scanner/ipmi/ipmi_dumphashes.rb:100:in `each'
[-] /home/bcook/projects/metasploit-framework/modules/auxiliary/scanner/ipmi/ipmi_dumphashes.rb:100:in `run_host'
[-] /home/bcook/projects/metasploit-framework/lib/msf/core/auxiliary/scanner.rb:111:in `block (2 levels) in run'
[-] /home/bcook/projects/metasploit-framework/lib/msf/core/thread_manager.rb:106:in `block in spawn'
[*] Auxiliary module execution completed
```
This is just a temporary change. Eventually we should be doing separate
lookups for associated objects as that is the RESTful way of doing it.
Implementing this now to prevent extra load on the server until we can
put a better system in place of doing multiple lookups with a single call.
When REMOTE_DB is set there is a thread for the web service, in
addition to the External modules thread manager, so there is one or two
threads by the end of the test run in addition to the main VM thread.
Metasploit